In terms of performance and speediness, here are a few examples where faster means better: * Overall, less time to wait as a normal user, e.g. when syncing with

In terms of performance and speediness, here are a few examples where faster means better: * Overall, less time to wait as a normal user, e.g. when syncing with the network to verify transactions. * Possibility to run the chain on low footprint iot devices. * Mining is faster if transactions can be processed faster therefore more money – although admittedly the PoW itself dominates the cost here.